ite UB ON BUA EST GN 9 
All subspecifie listing is based on the A. O. U. Check-List (19381) 
or On more recent publications, as cited, which have shed new light 
on the taxonomic problems involving new races or the validity of 
those previously described. 
MEXICAN GREBE (Colymbus dominicus brachypterus). June 11, 
Mission, and June 12, Harlingen. Only one individual seen in each 
case, the latter in the company of a small flock of coots. 
WHITE PELICAN (Pelecanus erythrorhynchos). Fairly abundant 
on the lagoons of the coastal prairies. It is less frequently seen in- 
land about the horseshoe lakes characteristic of Valley topography. 
A flock of 110 was seen June 13 on prairie pond east of Brownsville. 
MEXICAN CORMORANT (Phalacrocorax olivaceus mexicanus). Com- 
mon. 
WATER-TURKEY (Anhinga anhinga). Rather common about the 
bancas or ox-bow lakes south of Harlingen and LaF eria. 
MAN-O’-WAR-BIRD (Fregata magnificens). One seen at Green 
Island, June 15. 
WARD’S HERON (Ardea herodias wardi). Noted only on coastal 
lagoons and on Green Island, where it is one of the less numerous 
breeding species. About 100 seen at the latter location, a small per- 
centage of which were full-grown young on or about the nests. 
AMERICAN EGRET (Casmerodius albus egretta). Apparently un- 
common. A few noted at Mission and Harlingen and on the coastal 
lagoons. Breeding on Green Island in small numbers, where young 
on the nest were observed. 
SNOWY EGRET (Egretta thula thula). This and the following 
species were the most abundant herons breeding on Green Island. 
REDDISH EGRET (Dichromanassa rufescens rufescens). A few 
seen on the coastal lagoons in the direction of Horsehead Island. 
Numerous on Green Island, comparatively speaking, but according to 
the warden, very much decreased in numbers because of an unusually 
poor breeding season. This may have been due to an accumulation 
of factors, of which the major one may have been the great-tailed 
grackles, which annually destroy literally thousands of heron and 
egret eggs on this island. Control measures are promised by authori- 
ties in charge. Only a few nests and young were seen. 
LOUISIANA HERON (Hydranassa tricolor ruficollis). Rather abun- 
dant on the coastal lagoons; uncommon inland. Breeds on Green 
Island. 
LITTLE BLUE HERON (Florida caerulea caerulea). Frequently 
seen about the bancas and resacas of the Valley. None seen on the 
coastal lagoons or Green Island. 
EASTERN GREEN HERON (Butorides virescens virescens). Abun- 
dant; a few seen at most every swamp visited. 
BLACK-CROWNED NIGHT HERON (Nycticorax nycticorax hoactli). 
Rather uncommon inland; breeds on Green Island. 
YELLOW-CROWNED NIGHT HERON (Nyctanassa violacea violacea). 
One seen on the coastal prairies on June 13. 
